Average building footprint
121.9 m²
52.4 m² less than the Uusimaa average
Municipality · Karkkila
Drainage renovation in Karkkila
Local buildings, soil conditions and rainfall affect how perimeter drainage, stormwater and ground grading should be designed in Karkkila. Enter your address to see a property-specific plan, a binding price and the option to order the renovation online.
Enter address and see priceBuilding stock
10,234
Buildings
Land area
242 km²
Residential buildings
28.9 %
Annual rainfall
692 mm
19.6 mm less than the Uusimaa average
Average temperature
6.0 °C
0.5 °C lower than the Uusimaa average
Building types
What types of residential buildings are found in Karkkila?
Low-rise residential buildings are divided into detached, semi-detached and terraced houses by dwelling count. Apartment buildings follow the open Ryhti building classification.
Detached houses
2,228
85.6 % of these residential buildings
16.2 percentage points above the share in Uusimaa
Semi-detached houses
64
2.5 % of these residential buildings
9 percentage points below the share in Uusimaa
Terraced houses
143
5.5 % of these residential buildings
3.2 percentage points below the share in Uusimaa
Apartment buildings
90
3.5 % of these residential buildings
5.9 percentage points below the share in Uusimaa
The classification covers 56.6% of buildings in the area. A more precise type could not be assigned to 78 low-rise residential buildings because dwelling-count data was missing. The classification describes building type, not ownership or housing-company status.
Local rainfall
What does 692 mm mean for a house?
Water does not disappear from a property on its own. Roof water needs a stormwater system, surface water needs correctly graded ground and water in the soil needs perimeter drainage to carry it away from the foundations.
The area managed by the drainage and stormwater systems receives an average of
221,000 litres
per year. The estimate is based on an average detached house in Karkkila, with a building footprint of 141 m², plus the three-metre zone around the building.
Where does the water go at your home?
Ground grading directs rain and meltwater away from the building. The stormwater system carries roof water away in a controlled manner, while perimeter drains remove water accumulating beside and below the foundations. All three need a safe, working discharge route.
One less worry for your home
When water flows the right way, home can feel like home
Working perimeter drainage, a properly designed stormwater system and correct ground grading carry water away from the building. Good moisture management is almost invisible in daily life. That is exactly how it should be.
Salaojapiste also makes buying the renovation clear. You see the solution for your home and the price in advance. Every Salaojapiste renovation has a clear beginning and end, and you can continue online all the way to the contract.
See the solution for your homeFinland's first online store for drainage renovations
From price directly to order
This is more than a price calculator. We have already reviewed the building and checked the soil, where water loads the property, where it can naturally discharge and how the buildings are positioned on the plot. See what we found.
- 01
Choose your building
Enter the address and select the building on the map that the renovation concerns.
- 02
See the plan and price
You receive a site-specific renovation plan and a clear total price.
- 03
Order the renovation online
When you are ready, approve the contract and buy the renovation directly without intermediaries.
Price, plan and order
See the price and order a drainage renovation Karkkila
Enter the address and choose the building. With a few additional details, you receive the total price and can continue all the way to the contract if you wish.
Start here
Enter your address
Select your address to see how easily you can get a price for your renovation from us. Welcome to renovation buying done one step better!
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Soil data from GTK
What soil conditions are buildings in Karkkila founded on?
10,112buildings
Sandy till34.3 %
Fine sand19.3 %
Silt18.6 %
Sand12.6 %
Very fine sand5.2 %
Other soil types10.0 %
The most common surface soil type is Sandy till. This soil underlies 34.3 % of the buildings in Karkkila. the Uusimaa average the corresponding share is 20.0 %.
Municipality ranking in the region
How does Karkkila compare within Uusimaa?
Karkkila is compared with the region's 26 municipalities.
01
Number of buildingsRanked 17
02
Average building footprintRanked 18
03
Annual rainfallRanked 16
04
Average temperatureRanked 24
Location on the map
Karkkila
The map shows the location of Karkkila. Enter your address to see the exact map, soil and site data for your building.
See the price for your addressDrainage renovation by postcode area
Open the building, rainfall and soil data for your postcode area. Each area page leads directly to the plan and price for your address.
Other municipalities in Uusimaa
Compare building stock, soil and conditions affecting perimeter drainage renovations across municipalities.
Frequently asked questions
What does a perimeter drainage renovation cost in Karkkila?
The price depends on the building's size, drainage length, soil, working space, surfaces to be reinstated and the water discharge route. Enter the exact address to receive a property-specific plan and price.
How does soil affect a drainage renovation?
Soil affects excavation, trench construction, water movement and the machinery that can be used. Area data provides local context, but each property is always analysed separately.
Why does rainfall management matter?
Perimeter drainage, roof water, ground grading and a safe discharge route form one moisture-management system. Replacing drainpipes alone does not address every source of water load around the foundations.
Sources: the Finnish Environment Institute's Ryhti building data (building class and number of dwellings), the National Land Survey of Finland (buildings, municipal boundaries and official land area on 1 January 2026), Posti (postcodes, postal towns and BAF address ranges), Statistics Finland's Paavo data (postcode area boundaries), the Geological Survey of Finland GTK (surface soil) and the Finnish Meteorological Institute (rainfall and temperature data for 2016–2025).